RH6251 is designed to match the transmitter with 10 m Whip or 7-30 m Wire antennas input impedance within 1500 … 30000 kHz frequency range. RH6251 provides transformation of the antenna input impedance to 50 Ohm active resistance with VSWR less than 1.4 (without power reduction till VSWR =5.0) RH6251 has air cooled aluminum housing for installation inside a communication site (building or shelter vehicle). Antenna isolators are located on the top of the device and provide connection to the antenna: 2 symmetrical outputs (600 Ohm) and 1 non-symmetrical output (50 Ohm). Antenna switch is locating inside the device. RH6251 has 50 Ohm RF input connector for HF transmitter and the control cable connector (for up to 20 m remote control).
RH6251 has short and open circuit protection and appropriate failure alarms.
Technical specifications
Frequency range: 1500…30000 kHz
Input power: 5000 W PEP (without power reduction for VSWR<5.0)
Input impedance: 50 Ω( non-symm)/600 Ohm (symm) VSWR less than 1.4
Tuning time according
to the algorithm less than 5 sec
Tuning time from memory
on pre-programmed frequencies less than 0.3 sec
Tuning power 10 W
Antennas 10 m Whip,
7-30 m Wire
Supply voltage 220 V AC (AC/DC converter is built-in)
Dimensions 600x600x1000 mm
Weight 60 kg
Operation Temperature Range: -22 to 149°F (-30 to 60° C)
Storage Temperature Range: -22…149°F (-40…85°C)
